Although Christina Aguilera can belt James Brown, no one's dance moves can compare quite like contemporary 'Soul Man' Usher. So, it was obviously a magical moment (not to mention a whole lot of fun) when Mr. Raymond was joined by Mr. Brown onstage at the 2005 Grammy Awards.

Usher oozes talent out of every pore, and his 2005 performance of 'Caught Up' was an amazing dance extravaganza. He blazed through the intricate choreography while keeping his smooth vocals perfectly on-point. The big band-esque brass section, roaring '20s-inspired suits, and flashy stage design also added to Usher's outstanding performance.

However, the best part came at the very end, when James Brown made his entrance and brought the funk along with him. He and Usher grooved in unison to 'Sex Machine,' and watching the pair face off in a dance battle was definitely one of the most unforgettable Grammy moments ever.